<template>
    <div>
        <!-- 面包屑导航区域 -->
     <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>      
     </el-breadcrumb>

     <el-card >
      
        <el-row :gutter="20">
            <el-col :span="10">
                  <!-- 搜索与添加区域 -->
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                 </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click ="addlogVisible=true">添加用户</el-button>
            </el-col>
        </el-row>
    <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态" >
                <!-- 作用域插槽  scope可以拿到当前一行的数据 -->
                <template slot-scope="scope">
                    <!-- {{scope.row}} -->
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px" >
                <template slot-scope="scope">
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色按钮 -->
                     <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                      </el-tooltip>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页区域 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size=" queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
     </el-card>
     <!-- 添加用户的对话框 -->
     <el-dialog
    title="添加用户"
    :visible.sync="addlogVisible"
    width="50%" @close="addlogClose" > 
    <!-- 内容区域 -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
  <el-form-item label="用户名" prop="username">
    <el-input v-model="addForm.username"></el-input>
  </el-form-item>
   <el-form-item label="密码" prop="password">
    <el-input v-model="addForm.password"></el-input>
  </el-form-item>
   <el-form-item label="邮箱" prop="email">
    <el-input v-model="addForm.email"></el-input>
  </el-form-item>
   <el-form-item label="手机号" prop="mobile">
    <el-input v-model="addForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addlogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
</el-dialog>
  
  <!-- 修改用户的对话框 -->
  <el-dialog
  title="修改用户"
  :visible.sync="editDialogVisible"
  width="50%" @close="editDialogClosed">

  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
  <el-form-item label="用户名" >
    <el-input v-model="editForm.username" disabled></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop="email">
    <el-input v-model="editForm.email" ></el-input>
  </el-form-item>
  <el-form-item label="手机" prop="mobile" >
    <el-input v-model="editForm.mobile" ></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
</el-dialog>

<!-- 分配角色对话框 -->
<el-dialog
  title="分配角色"
  :visible.sync="setRoleDialogVisible"
  width="50%" @close="setRoleDialogClosed">
  <div>
      <p>当前的用户:{{userInfo.username}}</p>
     <p>当前的角色:{{userInfo.role_name}}</p>
     <p>分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
             v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id">
    </el-option>
  </el-select>
     </p>
  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>

<script>
import { async } from 'q'
export default {
    data(){
        //验证邮箱的规则
        var checkEmail=(rule,value,cb)=>{
            //验证邮箱的正则表达式
            const regEmail=/^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
            if(regEmail.test(value)){
                return cb()
            }
                cb(new Error('请输入合法的邮箱'))
        }
        var checkMobile=(rule,value,cb)=>{
            const regMobile=/^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$/
            if(regMobile.test(value)){
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:2
            },
            userlist:[],
            total:0,
            //控制当前用户对话框的显示与隐藏
             addlogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //添加表单的验证规则对象
            addFormRules:{
                username:[
                   {required: true,message:'请输入用户名',trigger:'blur'},
                    {
                     min:3,
                     max:10,
                     message:'用户名长度为3~10',
                     trigger:'blur'
                    }
                ],
                password:[
                    {required: true,message:'请输入密码',trigger:'blur'},
                    {
                     min:6,
                     max:15,
                     message:'密码长度为6~15',
                     trigger:'blur'
                    }
                ],
                email:[
                     {required: true,message:'请输入邮箱',trigger:'blur'},
                     {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                     {required: true,message:'请输入手机号',trigger:'blur'},
                     {validator:checkMobile,trigger:'blur'}
                ]

            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息
            editForm:{},
           //修改用户表单的验证规则对象
           editFormRules:{
                email:[
                     {required: true,message:'请输入邮箱',trigger:'blur'},
                     {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                     {required: true,message:'请输入手机号',trigger:'blur'},
                     {validator:checkMobile,trigger:'blur'}
                ]
           },
           //控制分配角色对话框的显示与隐藏
           setRoleDialogVisible:false,
           //需要被分配角色的用户信息
           userInfo:[],
           //获取的所有角色信息
           rolesList:[],
           //当前新选择的角色id值
           selectRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
       async getUserList(){
         const {data:res}= await this.$http.get('users',{ params:this.queryInfo}) 
         if(res.meta.status!==200) {
             return this.$message.error('获取用户列表失败')
         }
            this.userlist=res.data.users
            this.total=res.data.total
            //   console.log(res)
       },
       //监听pagesize改变的事件
       handleSizeChange(newSize){
        //    console.log(newSize)
           this.queryInfo.pagesize=newSize
           this.getUserList()
       },
       //监听页码值改变
       handleCurrentChange(newPage){
        //    console.log(newPage)
           this.queryInfo.pagenum=newPage
           this.getUserList()
       },
       //监听switch 开关的状态
     async userStateChanged(userInfo){
           console.log(userInfo)
          const {data:res}=await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
          if(res.meta.status!==200){
              userInfo.mg_state=!userInfo.mg_state
              return this.$message.error('更新用户状态失败')
          }
          this.$message.success('更新用户状态成功')
       },
       //监听添加用户对话框关闭事件
       addlogClose(){
           //原生js没这个方法，这个方法是出自 element-ui 框架里面，作用是移除校验结果并重置字段值，使用方法如下：
            //this.$refs.form.resetFields();
            //如果只是想移除校验结果，使用方法如下：
            //this.$refs.form.clearValidate();
           this.$refs.addFormRef.resetFields()
       },
       //点击按钮添加新用户
       addUser(){
        //    console.log(33)
         this.$refs.addFormRef.validate(async valid=>{
            //  console.log(valid)
            if(!valid) return
            //调用添加用户的接口
          const{data:res}= await this.$http.post('users',this.addForm)
          if(res.meta.status!==201){
             return this.$message.error('添加用户失败')
          }
              this.$message.success('添加用户成功')
              //隐藏弹出框
              this.addlogVisible=false
              //刷新用户列表
              this.getUserList()
         })
       },
       //展示编辑用户的对话框
      async showEditDialog(id){
        //    console.log(id)
       const{data:res}=await this.$http.get('users/'+id)
       if(res.meta.status!==200){
           return this.$message.error('查询用户信息失败')
       }
            this.editForm=res.data
           this.editDialogVisible=true
       },
        //监听修改用户对话框的关闭事件
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                // console.log(valid)
                if(!valid) return
              const {data:res}=await this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status!==200) return this.$message.error('修改信息失败')
                //如果修改成功
                //1.关闭对话框
                this.editDialogVisible=false
                //2.更新数据列表
                this.getUserList()
                //3.提示信息
                this.$message.success('修改信息成功')
            })
        },
        //根据id删除用户信息
       async removeUserById(id){
            // console.log(id)
          const confirmResult=await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
         }
        ).catch(err=>err)
        //  console.log(confirmResult) .catch可以捕获用户点击取消的行为
         //如果用户点击确定 则返回一个confirm字符串
         if(confirmResult!=='confirm'){
            return this.$message.info('已经取消删除')
         }
        //  console.log('已确认删除')
           const {data:res}= await this.$http.delete('users/'+id)
           if(res.meta.status!==200){
               return this.$message.error('删除失败')
           }
           this.$message.success('删除用户成功')
           this.getUserList()
        },
        //展示分配角色的对话框
       async setRole(userInfo){
            this.userInfo=userInfo
            //获取所有角色信息
          const {data:res}= await this.$http.get('roles')
          if(res.meta.status!==200){
              return this.$message.error('获取角色列表失败')
          }
          this.rolesList=res.data

            this.setRoleDialogVisible=true
        },
        //点击按钮分配新的角色
       async saveRoleInfo(){
            if(!this.selectRoleId){
                return this.$message.error('请选择要分配的角色')
            }
          const {data:res}= await this.$http.put(
              `users/${this.userInfo.id}/role`,
              {
                rid: this.selectRoleId
             }
            )
            // console.log(res)
            //这里注意 在网页中操作时是不允许修改admin的
            if(res.meta.status!==200){
                return this.$message.error('更新角色失败')
            }
            this.$message.success('更新角色成功')
            this.getUserList()
            this.setRoleDialogVisible=false
        },
        //监听分配角色对话框关闭事件
        setRoleDialogClosed(){
            //这里有没有必要把userInfo置为空？
            this.userInfo=[]
            this.selectRoleId=''
            
        }
       
    }
  
    }
   
</script>

<style lang="less" scoped>

</style>

